/*
 * Copyright 2002-2012 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.springframework.transaction.jta;

import javax.transaction.NotSupportedException;
import javax.transaction.SystemException;
import javax.transaction.Transaction;
import javax.transaction.TransactionManager;

import org.springframework.lang.Nullable;
import org.springframework.util.Assert;

/**
 * Default implementation of the {@link TransactionFactory} strategy interface,
 * simply wrapping a standard JTA {@link javax.transaction.TransactionManager}.
 *
 * <p>Does not support transaction names; simply ignores any specified name.
 *
 * @author Juergen Hoeller
 * @see javax.transaction.TransactionManager#setTransactionTimeout(int)
 * @see javax.transaction.TransactionManager#begin()
 * @see javax.transaction.TransactionManager#getTransaction()
 * @since 2.5
 */
public class SimpleTransactionFactory implements TransactionFactory {

    private final TransactionManager transactionManager;


    /**
     * Create a new SimpleTransactionFactory for the given TransactionManager
     *
     * @param transactionManager the JTA TransactionManager to wrap
     */
    public SimpleTransactionFactory(TransactionManager transactionManager) {
        Assert.notNull(transactionManager, "TransactionManager must not be null");
        this.transactionManager = transactionManager;
    }


    @Override
    public Transaction createTransaction(@Nullable String name, int timeout)
            throws NotSupportedException, SystemException {
        if (timeout >= 0) {
            this.transactionManager.setTransactionTimeout(timeout);
        }
        this.transactionManager.begin();
        return new ManagedTransactionAdapter(this.transactionManager);
    }

    @Override
    public boolean supportsResourceAdapterManagedTransactions() {
        return false;
    }

}
